Unit 3: Confidence Intervals Excel (Statistical Exercise) Due Saturday by 11:59pm Points 50 Submitting a file upload Confidence Intervals Excel (Statistical Exercise) (50 pts.) Access in Canvas Unit 3 - Confidence Intervals data file (Click here to download) Download (Click here to download) . Using the capabilities provided by Excel and the information you have learned regarding the calculation of confidence intervals, use Excel to perform the preliminary calculations necessary to construct confidence intervals for all variables presented. Once these preliminary calculations have been completed, select a value for alpha and proceed to construct an appropriate confidence interval for each variable. Insert a text box on each Excel worksheet to provide a brief overview of the steps taken to construct the confidence interval, which formula you used and why, and what the confidence interval tells you. Save and submit the Excel worksheet to complete the assignment. Please include with your submission any calculations completed by hand